[Secure-testing-team] Bug#839986: qemu: CVE-2016-7907: net: inifinte loop in imx_fec_do_tx() function

[Salvatore Bonaccorso]

Source: qemu
Version: 1:2.6+dfsg-3.1
Severity: normal
Tags: security upstream

Hi,

the following vulnerability was published for qemu.

CVE-2016-7907[0]:
| The imx_fec_do_tx function in hw/net/imx_fec.c in QEMU (aka Quick
| Emulator) does not properly limit the buffer descriptor count when
| transmitting packets, which allows local guest OS administrators to
| cause a denial of service (infinite loop and QEMU process crash) via
| vectors involving a buffer descriptor with a length of 0 and crafted
| values in bd.flags.

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2016-7907

Regards,
Salvatore